WI #16-125
MEMORANDUM
10 October 2017
To: Andrew Crabtree
Community Development Department, City of Santa Clara
Fr: Derek Watry
Re: Levi’s Stadium Noise Level Monitoring Project
Noise Level Readings of Coldplay Concert (4 October 2017)
This memorandum presents noise level data collected on the evening of Wednesday, 4 October 2017, during the Coldplay concert at Levi’s Stadium. Data was collected in the neighborhoods around the stadium using the Seti-Media system installed for this purpose.
Measurements were made at four locations around the stadium (see Figure 1), but this memo only reports data from the closest monitor at Cheeney and Lenox.
Figure 2 shows a comparison of the noise levels during the concert to ambient noise level data collected on 15 nights in September in 5-minute intervals.
Because the concert was on a Wednesday night, the comparative days were all Monday, Tuesday, Wednesday, and Thursday nights in September except Thursday the 21st because there was a 49er football game that evening. The comparative data shows the maximum, average, and minimum ambient sound levels.
Coldplay came on stage at 9:00 PM, and the sound level associated with the opening number was louder than the maximum ambient level at that time in September. The show came to a close just before 11:00 PM, and fireworks at the end of the show also caused the noise in a 5-minute period to be higher than the maximum in September. Between the opening number and the fireworks, the concert sound level was typically above the average sound level at this location, but below the maximum measured in September.
* * * * * Levi’s Stadium Noise Level Monitoring
Noise Levels of Coldplay Concert
2 FIGURE 1 AREA MAP WITH NOISE MONITORING LOCATIONS
(DISTANCES ARE FROM BLUE DOTS)
#4
Ave de Lago &
Ave de los Arboles
Stadium: 2,700 ft
#3
Hughes Elementary
Stadium: 1,800 ft
#1
Cheeney & Lenox
Stadium: 1,850 ft
#2
4624 Cheeney
Stadium: 2,460 ft
Stadium
Levi’s Stadium Noise Level Monitoring
Noise Levels of Coldplay Concert
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